Patents by Inventor Andrew Bruce Holmes

Andrew Bruce Holmes has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11183648
    Abstract: A polymer containing an optionally substituted repeat unit of formula (I) wherein each R is the same or different and represents H or an electron withdrawing group, and each R1 is the same or different and represents a substituent.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: November 23, 2021
    Assignees: CAMBRIDGE DISPLAY TECHNOLOGY LIMITED, CAMBRIDGE ENTERPRISE LIMITED
    Inventors: Carl R. Towns, Chris Mak, Khai Leok Chan, Andrew Bruce Holmes
  • Publication number: 20160343961
    Abstract: A polymer containing an optionally substituted repeat unit of formula (I) wherein each R is the same or different and represents H or an electron withdrawing group, and each R1 is the same or different and represents a substituent.
    Type: Application
    Filed: July 12, 2016
    Publication date: November 24, 2016
    Applicants: CAMBRIDGE DISPLAY TECHNOLOGY LIMITED, CAMBRIDGE ENTERPRISE LIMITED
    Inventors: Carl R. Towns, Chris Mak, Khai Leok Chan, Andrew Bruce Holmes
  • Patent number: 9419233
    Abstract: A polymer containing an optionally substituted repeat unit of formula (I) wherein each R is the same or different and represents H or an electron withdrawing group, and each R1 is the same or different and represents a substituent.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: August 16, 2016
    Assignees: CAMBRIDGE DISPLAY TECHNOLOGY LIMITED, CAMBRIDGE ENTERPRISE LIMITED
    Inventors: Carl R. Towns, Chris Mak, Khai Leok Chan, Andrew Bruce Holmes
  • Patent number: 9172052
    Abstract: An organic light emitting device having a phase-separated light-emissive layer comprising: a charge transport phase comprising a charge transport material; and an emitting phase, the emitting phase comprising a plurality of discrete emissive domains dispersed in the charge transport phase, each emitting domain comprising a host material and one or more metal complexes for emitting light by phosphorescence; wherein the charge transport material has a T1 energy level lower than the T1 energy level of the metal complexes and the host material has a T1 energy level higher than the T1 energy level of the metal complexes.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: October 27, 2015
    Assignees: CDT OXFORD LIMITED, CAMBRIDGE DISPLAY TECHNOLOGY LIMITED
    Inventors: Carl Towns, Andrew Bruce Holmes, Stephen O'Connor
  • Patent number: 9023978
    Abstract: A material capable of luminescence comprising a polymer or oligomer and an organometallic group, wherein the polymer or oligomer is at least partially conjugated and the organometallic group is covalently bound to the polymer or oligomer and at least one of the nature, location, and proportion of the polymer or oligomer and of the organometallic group in the material are selected so that the luminescence predominantly is phosphorescence.
    Type: Grant
    Filed: April 24, 2003
    Date of Patent: May 5, 2015
    Assignee: Cambridge Enterprise Ltd.
    Inventors: Andrew Bruce Holmes, Albertus Sandee, Charlotte Williams, Annette Koehler, Nick Evans
  • Patent number: 8945432
    Abstract: A conductive polymer composition comprising a conductive polymer in a solid polyelectrolyte.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: February 3, 2015
    Assignees: Cambridge Display Technology Limited, CDT Oxford Limited
    Inventors: Andrew Bruce Holmes, Mary J. McKiernan, Caroline Towns
  • Publication number: 20140187716
    Abstract: Processes for the continuous production of conjugated polymers are disclosed. The processes provide excellent control over reaction parameters and are highly reproducible. The conjugated polymers find use in heterojunction devices.
    Type: Application
    Filed: July 13, 2012
    Publication date: July 3, 2014
    Applicant: The University of Melbourne
    Inventors: David John Jones, Wing Ho Wallace Wong, Andrew Bruce Holmes, Helga Seyler
  • Publication number: 20120065338
    Abstract: An organic light emitting device having a phase-separated light-emissive layer comprising: a charge transport phase comprising a charge transport material; and an emitting phase, the emitting phase comprising a plurality of discrete emissive domains dispersed in the charge transport phase, each emitting domain comprising a host material and one or more metal complexes for emitting light by phosphorescence; wherein the charge transport material has a T1 energy level lower than the T1 energy level of the metal complexes and the host material has a T1 energy level higher than the T1 energy level of the metal complexes.
    Type: Application
    Filed: November 15, 2011
    Publication date: March 15, 2012
    Applicants: CAMBRIDGE DISPLAY TECHNOLOGY LIMITED, CDT OXFORD LIMITED
    Inventors: Carl Towns, Andrew Bruce Holmes, Stephen O'Connor
  • Patent number: 8063554
    Abstract: An organic light emitting device having a phase-separated light-emissive layer comprising: a charge transport phase comprising a charge transport material; and an emitting phase, the emitting phase comprising a plurality of discrete emissive domains dispersed in the charge transport phase, each emitting domain comprising a host material and one or more metal complexes for emitting light by phosphorescence; wherein the charge transport material has a T1 energy level lower than the T1 energy level of the metal complexes and the host material has a T1 energy level higher than the T1 energy level of the metal complexes.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: November 22, 2011
    Assignees: CDT Oxford Limited, Cambridge Display Technology Limited
    Inventors: Andrew Bruce Holmes, Carl Towns, Stephen O'Connor
  • Patent number: 7820803
    Abstract: The invention relates to immobilized phosphatidic acid probes which can be used to identify important proteins for signal transduction, housekeeping and diagnosis.
    Type: Grant
    Filed: August 23, 2001
    Date of Patent: October 26, 2010
    Inventors: Len Stephens, Phillip Thomas Hawkins, Andrew Bruce Holmes, Maria Manifava, Ze-Yi Lim, Nicholas Ktistakis, Johannes Wilhelmus John Fitzgerald Thuring
  • Patent number: 7795802
    Abstract: Optical devices fabricated from solvent processible polymers suffer from susceptibility to solvents and morphological changes. A semiconductive polymer capable of luminescence in an optical device is provided. The polymer comprises a luminescent film-forming solvent processible polymer which contains cross-linking so as to increase its molar mass and to resist solvent dissolution, the cross-linking being such that the polymer retains semiconductive and luminescent properties.
    Type: Grant
    Filed: July 18, 2005
    Date of Patent: September 14, 2010
    Assignee: Cambridge Display Technology Ltd.
    Inventors: Andrew Bruce Holmes, Xiao-Chang Li, Stephen Carl Moratti, Kenneth Andrew Murray, Richard Henry Friend
  • Publication number: 20100025703
    Abstract: A conductive polymer composition comprising a conductive polymer in a solid polyelectrolyte.
    Type: Application
    Filed: December 23, 2005
    Publication date: February 4, 2010
    Applicants: Cambridge Display Technology Limited, CDT OXFORD LIMITED
    Inventors: Carl Towns, Andrew Bruce Holmes, Mary McKiernan
  • Publication number: 20090236972
    Abstract: An organic light emitting device having a phase-separated light-emissive layer comprising: a charge transport phase comprising a charge transport material; and an emitting phase, the emitting phase comprising a plurality of discrete emissive domains dispersed in the charge transport phase, each emitting domain comprising a host material and one or more metal complexes for emitting light by phosphorescence; wherein the charge transport material has a T1 energy level lower than the T1 energy level of the metal complexes and the host material has a T1 energy level higher than the T1 energy level of the metal complexes.
    Type: Application
    Filed: December 12, 2005
    Publication date: September 24, 2009
    Applicants: Cambridge Display Technology Limited, CDT Oxford Limited
    Inventors: Carl Towns, Stephen O'Connor, Andrew Bruce Holmes
  • Patent number: 7365141
    Abstract: Optical devices fabricated from solvent processible polymers suffer from susceptibility to solvents and morphological changes. A semiconductive polymer capable of luminescence in an optical device is provided. The polymer comprises a luminescent film-forming solvent processible polymer which contains cross-linking so as to increase its molar mass and to resist solvent dissolution, the cross-linking being such that the polymer retains semiconductive and luminescent properties.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: April 29, 2008
    Assignee: Cambridge Display Technology Ltd.
    Inventors: Andrew Bruce Holmes, Xiao-Chang Li, Stephen Carl Moratti, Kenneth Andrew Murray, Richard Henry Friend
  • Patent number: 7358398
    Abstract: A method of synthesizing a compound of formula I: comprising the step of reacting a moiety of formula II: with a moiety of formula III: in compressed carbon dioxide in the presence of a transition metal catalyst and a base, wherein L is a labile leaving group; RN1 is optionally substituted C5-20 aryl; RN2 is selected from optionally substituted C5-20aryl, optionally substituted C3-20 heterocyclyl, optionally substituted C3-7 alkyl, and optionally substituted sulfonyl; RN3 is selected from H and optionally substituted C1-7 alkyl, C3-20 heterocyclyl and C5-20 aryl; or RN2 and RN3 together with the nitrogen atom to which they are attached form optionally substituted nitrogen-containing C3-20 heterocylyl or C5-20 heteroaryl; and R1 R2 and R3 are independently selected from optionally substituted C1-7 alkyl, C5-20 aryl, C3-20 heterocyclyl, hydroxy, halo, amino and C1-7 alkoxy, or two of R1, R2 and R3, together with the silicon atom to which they are attached, may form a silicon containing C5-7 heterocyclyl group.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: April 15, 2008
    Assignee: AstraZeneca UK Limited
    Inventors: Andrew Bruce Holmes, Catherine Janet Smith, Melanie Wing-Sze Tsang, Theresa Rachel Early, Richard Eden Shute
  • Patent number: 7105621
    Abstract: Optical devices fabricated from solvent processible polymers suffer from susceptibility to solvents and morphological changes. A semiconductive polymer capable of luminescence in an optical device is provided. The polymer comprises a luminescent film-forming solvent processible polymer which contains cross-linking so as to increase its molar mass and to resist solvent dissolution, the cross-linking being such that the polymer retains semiconductive and luminescent properties.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: September 12, 2006
    Assignee: Cambridge Display Technology Ltd.
    Inventors: Andrew Bruce Holmes, Xiao-Chang Li, Stephen Carl Moratti, Kenneth Andrew Murray, Richard Henry Friend
  • Patent number: 7049010
    Abstract: Provided is a conjugated poly(1,4-arylene vinylene) compound comprising an arylene unit having adjacent substituents, said substituents being oriented such as to affect the electronic structure of the compound sufficiently to cause a blue-shift in the photoluminescence and/or electroluminescence of the compound.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: May 23, 2006
    Assignee: Cambridge Display Technology Limited
    Inventors: Andrew Bruce Holmes, Beng Sim Chuah, Franco Cacialli, Steven Carl Moratti
  • Patent number: 6919415
    Abstract: Optical devices fabricated from solvent processible polymers suffer from susceptibility to solvents and morphological changes. A semiconductive polymer capable of luminescence in an optical device is provided. The polymer comprises a luminescent film-forming solvent processible polymer which contains cross-linking so as to increase its molar mass and to resist solvent dissolution, the cross-linking being such that the polymer retains semiconductive and luminescent properties.
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: July 19, 2005
    Assignee: Cambridge Display Technology Ltd.
    Inventors: Andrew Bruce Holmes, Xiao-Chang Li, Stephen Carl Moratti, Kenneth Andrew Murray, Richard Henry Friend
  • Publication number: 20040096903
    Abstract: Probes comprising a cardiolipin derivative covalently attached to a solid phase, other than through an allylic oxygen, are described. Methods of making the probes are also described. A cardiolipin analogue which is amino-derivatised at the end of one of the fatty acid side chains is reacted with an activated ester attached to a solid support. The probes are useful for diagnosis of anti-phospholipid antibody syndrome (APS), and for identifying and purifying cardiolipin binding proteins.
    Type: Application
    Filed: December 19, 2003
    Publication date: May 20, 2004
    Inventors: William Kenneth Lang, Andrew Bruce Holmes, Ze-Yi Lim, Stuart John Conway, Melloney Kate Johns
  • Patent number: 6723811
    Abstract: Optical devices fabricated from solvent processible polymers suffer from susceptibility to solvents and morphological changes. A semiconductive polymer capable of luminescence in an optical device is provided. The polymer comprises a luminescent film-forming solvent processible polymer which contains cross-linking so as to increase its molar mass and to resist solvent dissolution, the cross-linking being such that the polymer retains semiconductive and luminescent properties.
    Type: Grant
    Filed: April 28, 2000
    Date of Patent: April 20, 2004
    Assignee: Cambridge Display Technology Ltd.
    Inventors: Andrew Bruce Holmes, Xiao-Chang Li, Stephen Carl Moratti, Kenneth Andrew Murray, Richard Henry Friend